Install tmux on CentOS 6
tmux is a terminal emulator. It work like screen, but have more features.
CentOS 6 do not come with tmux, you need to enable rpmforge repository.
On CentOS 6 64 bit, run
rpm -ivh http://repository.it4i.cz/mirrors/repoforge/redhat/el6/en/x86_64/rpmforge/RPMS/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm yum install tmux